export async function init()

in packages/fxa-settings/src/lib/metrics.ts [168:236]
54 lines of code
19 McCabe index (conditional complexity)

export async function init(enabled: boolean, flowQueryParams: QueryParams) {
  setEnabled(enabled);

  if (!initialized) {
    // Initialize from the qs if we have the critical flow pieces
    if (
      flowQueryParams.deviceId &&
      flowQueryParams.flowBeginTime &&
      flowQueryParams.flowId
    ) {
      flowEventData = { ...flowQueryParams };
    } else {
      // Or initialize as a fresh flow
      const flowResponse = await fetch('/metrics-flow');
      flowEventData = await flowResponse.json();
    }

    let uniqueUserIdFromLocalStorage;
    try {
      uniqueUserIdFromLocalStorage = JSON.parse(
        localStorage.getItem('__fxa_storage.uniqueUserId')!
      );
    } catch (e) {}

    flowEventData.uniqueUserId = flowQueryParams.uniqueUserId
      ? flowQueryParams.uniqueUserId
      : uniqueUserIdFromLocalStorage;

    // Make sure the default values are set. If default values are not set, metrics posts can fail.
    // There are situations where arriving directly to /beta/settings means query params won't be
    // provided, and we will use a set of fixed defaults.
    if (!flowEventData.uniqueUserId) {
      flowEventData.uniqueUserId = uuid();
      try {
        localStorage.setItem(
          '__fxa_storage.uniqueUserId',
          JSON.stringify(flowEventData.uniqueUserId)
        );
      } catch (e) {}
    }

    flowEventData.broker =
      configurableProperties.broker ||
      flowEventData.broker ||
      flowEventDataDefaults.broker;

    flowEventData.context =
      configurableProperties.context ||
      flowEventData.context ||
      flowEventDataDefaults.broker;

    flowEventData.service =
      configurableProperties.service ||
      flowEventData.service ||
      flowEventDataDefaults.service;

    flowEventData.isSampledUser =
      configurableProperties.isSampledUser ||
      flowEventData.isSampledUser ||
      flowEventDataDefaults.isSampledUser;

    flowEventData.deviceId =
      configurableProperties.deviceId ||
      flowEventData.deviceId ||
      flowEventDataDefaults.deviceId;

    initialized = true;
  }
}